-83.39% is the change from 620 to 103
Calculation steps:
[( 103 - 620 ) ÷ 620] x 100 = -83.39%
Formula
Percentage change = [(103 - 620) / 620] x 100
Subtract the new number by the original number
103 - 620 = -517
-517 ÷ 620 = -0.8338709677419355
-0.8338709677419355 x 100 = -83.39%